Peeping Guest

I have an interesting situation, which I feel embarrassed about, but also found it turns me on weirdly. I've never had a fetish really, but this might be one. My older sister's son recently graduated from college and took a pretty good job offer in my state. I've seen so many confessions regarding aunt affairs etc. but this really isn't that racy. We live on the west coast, and he grew up on the east coast, so although we are close, I would only see him and my sister at holiday visits once every few years.

Our home is large, and I work from home, while my husband is in an office daily, there is a lot of room to spread out, so we had no issues offering my nephew a room in our home while he gets his footing and finds an apartment. We never had kids, and I am the family outlier I guess, moving across the country after college and never returning, so our life is pretty different than my nephew is accustomed to. Hès a very sweet kid, twenty years younger than me, and from what I can tell pretty sheltered and shy.

A couple of weeks ago, my husband had an early tee time to play golf, we live on the course and came home from work early. He said when he entered, the house was quiet, but he could hear the water from the shower in our primary bedroom. I was in the shower. He said as he rounded the corner of our entry foyer, he saw my nephew standing near our bedroom door looking into the corner of the door. He works two days a week remotely and was home on that day. I work from home completely and had jumped into the shower after using our gym. My husband said my nephew quickly moved down the hallway from our door disappearing into his room, likely thinking he wasn't seen my y hubby. My husband said that he was able to see into our room through the gap in the side of the sliding barn style door of our primary suite. My hubby looked and said that he could see me perfectly in the shower by my reflection in the mirror over our sinks. When my hubby told me this, he laughed and said, "I don't blame him, I would want to see your breasts too"! My husband loves my body but I'm twenty years older than my nephew so I didn't think he would remotely find me attractive. My husband said, "well you have a large chest which often gets attention whether you want it or not.

Anyway, this discovery has turned me on for some reason, and it's not that I would ever want to have sex with this younger person, it's just the idea that he was trying to see me nude. I may be to blame because each morning I do wear thin pjs that are a short sleeve top and short bottoms. I was thinking about that and like anyone else I sleep braless so when I'm enjoying my coffee in the morning in the sunroom off of the kitchen, you can see my breasts and nipples pretty clearly. This is what I've worn every morning for years, so it seemed normal to me. I'm not sure what to think of this but being looked at is really arousing me.
Any thoughts are appreciated, thanks in advance.